# iSpring RCC100P 5-Stage Under-Sink Reverse Osmosis System, 100 GPD

Under-Sink: The iSpring RCC100P reverse osmosis system combines a five-stage filter with an electric booster pump and storage tank. Its stated 100 GPD capacity and pump-assisted design may suit homes with low inlet pressure, while the tank supplies stored water rather than filtering directly on demand.

- [Original product page](https://best-deals.pro/product/ispring-rcc100p-5-stage-under-sink-reverse-osmosis-system)
- [View offer](https://best-deals.pro/visit/ispring-rcc100p-5-stage-under-sink-reverse-osmosis-system)
- Market: US
- Language: en-US
- Currency: USD
- Brand: iSpring
- Model: Reverse Osmosis System
- Category: Home & Kitchen > Kitchen Appliances > Water Purifiers
- Price: 263.49 USD
- Previous price: 310.49 USD
- Discount: 15%
- Price checked: 2026-11-14T07:04:00.945Z
- Rating: 4.6 / 5
- Reviews: 92

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Five-stage filtration includes three pre-filters, an RO membrane and a final GAC filter, according to the listing.
- An electric booster pump is intended to help maintain RO performance when inlet pressure is low. The manufacturer describes this as particularly useful below about 40 PSI.
- A pressurized storage tank holds filtered water for access at the faucet without waiting for each serving to be produced.
- The transparent first-stage housing allows visual inspection of the sediment filter.

## Pros

- Pump-assisted design addresses low household water pressure, a key consideration for RO systems.
- The storage tank provides a ready reserve of filtered water.
- The listed kit includes a faucet, tubing, pump, tank, filters and membrane.

## Cons

- The under-sink system and storage tank require cabinet space, with listed dimensions of 19"L x 8"W x 14.5"H.
- Reverse osmosis relies on a storage tank, so it is not a tankless, direct-flow setup.

## Specifications

### Identity
- Brand: iSpring
- Model: Reverse Osmosis System
- Filtration stages: 5-stage
- Purification method: Reverse Osmosis
- Stated output capacity: 100 GPD
### Power and operation
- Power configuration: Electric
- Maximum supported water TDS: 750
- Upper temperature rating: 100 °F
### Dimensions and installation
- Installation type: Under Sink
- Dimensions listed: 19"L x 8"W x 14.5"H
- Weight listed: 33.6 pounds
### Materials and protection
- Material listed: RE
- Special feature: Reduce TDS
### Listed components
- Included components: 4 filters and 1 membrane, 1 tubing set, 1 faucet, 1 pump, 1 tank

## Before you buy

- Listing details are inconsistent: the title identifies RCC100P, but the model number field says RCC1P and the model name is generic. The title and description claim 100 GPD, while the details list capacity as 100 gallons without a time period. The listed material is "RE," and the package-information field says "Bottle," neither of which clarifies the system's construction or packaging. Verify the selected listing's exact model and capacity details before buying.
- The claimed reduction percentages and contaminant list are manufacturer statements, not independent measurements. The page also gives different general claims, including up to 99% and up to 99.99%, without specifying matching conditions for each.

## In the box

- 4 filters (Included)
- 1 membrane (Included)
- 1 tubing set (Included)
- 1 faucet (Included)
- 1 pump (Included)
- 1 tank (Included)

## A good fit for

- Households seeking under-sink RO filtration with a storage tank and dedicated faucet.
- Homes with low inlet water pressure where an electric booster pump may support membrane operation.
- Buyers who want a visual view of the first-stage sediment filter housing.

## Less suited to

- Buyers who need a compact countertop unit or a tankless system.
- Installations without room for an under-sink unit and its storage tank.

## Customer feedback

Customer feedback highlights satisfaction with water quality, taste, installation and flow, with reports describing the instructions as clear. Some feedback about pressure is mixed, which matters because consistent inlet pressure affects RO production. The manufacturer says this model includes a booster pump, but that claim does not establish how it will perform in a particular home's plumbing.
- Positive themes: Customers describe installation as easy and the instructions as clear.
- Positive themes: Customers report favorable water taste and flow. One customer reports about 6 gallons per hour.
- Mixed feedback: Pressure feedback is mixed, with some customers saying it is not great.

## Frequently asked questions

### Does the RCC100P include a storage tank?
The listed components include one tank, and the product description says the system stores filtered water in a pressurized tank.
### Is this system intended for homes with low water pressure?
The listing describes an electric booster pump for pressure variations and says it is especially relevant when inlet pressure is below about 40 PSI.
### What does the stated 100 GPD capacity mean?
The title and product description state 100 GPD. The details field instead says "100 gallons" without a time period, so confirm the capacity specification for the selected listing.
### What is included?
The listed contents are four filters, one membrane, one tubing set, one faucet, one pump and one tank.

## Alternative options

- [iSpring RCC7-BN NSF Certified, High Capacity Under Sink 5-Stage Reverse Osmosis Water Filter, RO Drinking System, 75 GPD Brushed Nickel Faucet, Patented Top-Mounted Faucet Design for Easy Installation](https://best-deals.pro/visit/ispring-rcc7-bn-5-stage-under-sink-ro-system)
- [iSpring RO500-BN, NSF Certified Tankless RO Reverse Osmosis Water Filtration System, 500 GPD Fast Flow, Brushed Nickel Faucet, 2:1 Pure to Drain Ratio, White](https://best-deals.pro/visit/ispring-ro500-bn-tankless-reverse-osmosis-filter)
- [iSpring RO600ORB Tankless Reverse Osmosis System Under Sink, 600 GPD Fast Flow RO System, 2.5:1 Pure to Drain Ratio RO Water Filter System, Oil Rubbed Black Faucet, White](https://best-deals.pro/visit/ispring-ro600orb-tankless-under-sink-reverse-osmosis-system)
- [iSpring RCS10T Tankless Reverse Osmosis System, 1000 GPD, 5-Stage \| 2.5:1 Pure-to-Drain Ratio, Built-In Booster Pump, for Residential and Light Commercial Use](https://best-deals.pro/visit/ispring-rcs10t-tankless-reverse-osmosis-system)
- [iSpring Whole House Water Filter System, Reduces Chlorine, Chloramine, Lead, Water Filter Lasts up to 3 Years, Model: WF1024](https://best-deals.pro/visit/ispring-wf1024-whole-house-water-filter)
- [iSpring RCD100 5-Stage Countertop Reverse Osmosis System, Instant Hot RO Water Dispenser with UV, 2.5:1 Pure to Drain, 100 GPD Portable Water Filtration System, 4 Temperature Options, Plug and Play](https://best-deals.pro/visit/ispring-rcd100-countertop-reverse-osmosis-hot-water-system)
- [iSpring US31 3-Stage Under Sink Water Filter System with Faucet, 1 Year \| 10000 Gal, NSF/ANSI Certified Filters, Reduces Chlorine, Sediment, and Harmful Chemicals, SGS-Tested, 5–10 Years Housings](https://best-deals.pro/visit/ispring-rcc100p-5-stage-under-sink-reverse-osmosis-system)
- [iSpring RCC7AK-BN NSF Certified, 75 GPD, Alkaline 6-Stage Reverse Osmosis System, pH+ Remineralization RO Water Filter System Under Sink Patented Top-Mounted Faucet Design for Easy Installation](https://best-deals.pro/visit/ispring-rcc100p-5-stage-under-sink-reverse-osmosis-system)
- [3M Aqua-Pure Under Sink Reverse Osmosis Water Filtration System 3MRO301 \| Compact RO System Reduces Impurities For Clean Drinking Water](https://best-deals.pro/visit/ispring-rcc100p-5-stage-under-sink-reverse-osmosis-system)
- [iSpring RO500AK Alkaline Reverse Osmosis System, NSF 58 Certified, 500 GPD \| Under Sink Tankless RO Water Filter, Fill 8 oz in 10 s, 2:1 Low Drain Ratio, TDS PFAS Reduction, Auto Flush, Filter Reminder](https://best-deals.pro/visit/ispring-rcc100p-5-stage-under-sink-reverse-osmosis-system)
- [ANGEL X4 Tankless Reverse Osmosis System, 1000 GPD Under Sink RO Filter \| Certified to NSF/ANSI 372, Smart TDS & Filter Display, 0.66 GPM Fast Flow, 3:1 Pure-to-Drain Ratio, Up to 3-Year RO Filter](https://best-deals.pro/visit/ispring-rcc100p-5-stage-under-sink-reverse-osmosis-system)
- [iSpring RO5004F Reverse Osmosis Water Filter with UV, SGS Tested PFAS and TDS Reduction, 500 GPD RO System Under Sink, 2:1 Pure to Drain, Tankless RO Water Filtration System, Filter Life Monitor](https://best-deals.pro/visit/ispring-rcc100p-5-stage-under-sink-reverse-osmosis-system)

## Add-ons

- [iSpring F7-GAC NSF Certified 1-Year Replacement Filter Cartridge Pack, 7-Count for Standard 5-Stage Reverse Osmosis \(RO\) Systems](https://best-deals.pro/visit/ispring-rcc100p-5-stage-under-sink-reverse-osmosis-system)

## Images

![iSpring RCC100P 5-Stage Under-Sink Reverse Osmosis System, 100 GPD — 1](https://best-deals.pro/i/yPQrqmtmhsWq1mfLCXqxV0acWxVGg8hBrmAjCCJa-Dv72tLyoMKnXroc7tfe51Gzaf_EX09vzJmqR1FNz0AkCoxFjGf6Koz-GSQfS08HJHW9ueNixkhGx0Dp.jpg)

![iSpring RCC100P 5-Stage Under-Sink Reverse Osmosis System, 100 GPD — 2](https://best-deals.pro/i/ySw5tgahEGefzVwwCCm8cttR5YmqGxZN6faWZaJa8QMykSeZPBMHsa7It7G71Fn3m53xGptUZKQeB6SZWw1SHU0AfULx3DVJLh147L2rMQfLGWzUubGCEZp5.jpg)

![iSpring RCC100P 5-Stage Under-Sink Reverse Osmosis System, 100 GPD — 3](https://best-deals.pro/i/XUgj1NO_9wi4XlewNA_oBLbO0LiXyuXK0w4NXO3t3fYPs1L_dJYcNKkOM6sfLqOKh9_G_J7DqRz__VDgKY4BL4BYjAGJZiSHlEbh7ozj3dcBNHgAI8ovHBiC.jpg)

![iSpring RCC100P 5-Stage Under-Sink Reverse Osmosis System, 100 GPD — 4](https://best-deals.pro/i/BPwnYxIQ2i7ZgId2KiUk_hn_rEPNMl5qGnuew_fo4erqOBAFuk4275XmAXheIE20ICHyNHIsDhEi_LaNNand77iP1JoYC8kq9WR8ojEQpjXJc6A9CPl3UCCd.jpg)

![iSpring RCC100P 5-Stage Under-Sink Reverse Osmosis System, 100 GPD — 5](https://best-deals.pro/i/gOUwZFN7w5hLO2xw-Ahm465OMUdXQ2HTu4fhhoYwJdRJjsciKWdArlasjvr8Xp5aXhPac2RDdnsqwQCmZnsDT9YqkoGD_TraL2TPgj66ukYO3J47JNzmP56U.jpg)

![iSpring RCC100P 5-Stage Under-Sink Reverse Osmosis System, 100 GPD — 6](https://best-deals.pro/i/LMwCPRDmAQRdUmokI0jP-1M1hxPqE68beCfZbTRk498qQbaJSk6_oCecXNdZ4sjzL1uUFzoWMkSIC5UdyvHaZtWWfiqj-8-ZNuVTk5jsvIwY2_j14n9zpkiz.jpg)

![iSpring RCC100P 5-Stage Under-Sink Reverse Osmosis System, 100 GPD — 7](https://best-deals.pro/i/Ignsl1pIwRolFFD08WwbYUEoUu2ozf6AL7dc6qky9sOGzleXvX-mWbv0J2oTfv5ycDg2_flVOwBg69R9h0JNk8p0VLHoFuxLOHtXI0f_qKbhOA3NpZRW8RNc.jpg)